I think there’s value in taking a step back. You need certain things. Food, water, shelter, heat, protection, entertainment, etc.
You can buy these things and have access to them. Some are problematic though: you can’t store a lifetime’s supply of food as it will spoil and also take up too much space. The same with water. So you have to have access to a source that produces them. This could be a forest, land with animals on them etc. Of course, this isn’t practical unless you want to be a farmer.
Then you have to do the next best thing, accumulate other things that can be traded for the things you need. Now again, you can accumulate the stuff you need e.g. money, or businesses that produce in-demand goods and services.
You have to be wary that the things you accumulate do not spoil (money lost through inflation/hyperinflation) or confiscated (Russian stocks, gold in the US), or become obsolete (Kodak) or turn out to be frauds (Madoff) or fads/bubbles (Tulips, Tesla? Bitcoin?). Skills in a in-demand area is one way to secure tradeable offerings. There will probably always be demand for a music teacher, physician, cleaner, plumber. But watch out if AI and robotics start to disrupt even these areas.
I try to naturally hedge where possible, e.g. buy the roof over my head (even this plan has been weakened due to Brexit uncertainties). In my young paranoid prepper days, I even secured some daily items e.g. I found a bulk liquidation deal on razor blades and bought a lifetime supply of these and steadily working my way through them.
So if someone makes a fuss about paper gains, do remind them that even the 100 Fr. notes in their wallet are simply paper claims. And claims on what, in reality? Exchange for gold is long gone, maybe the ability to pay taxes and the vague hope it can be exchanged for something in the future. Gold is a step up, but you can’t eat gold either.